In response to growing concerns over the contamination left behind at clandestine methamphetamine labs, the Ministry of Health has put together the following guidance to assist public health staff of district health boards and other agencies such as territorial authorities in addressing public concerns and giving practical advice.

This document describes the processes various governmental agencies commonly use to investigate and to cleanup "meth labs" and other types of clandestine drug laboratories.

Background • Here we present guidelines on the remediation of clandestine The illegal manufacturing of amphetamine- amphetamine-derived drug labs for derived drugs is an increasing problem in the purposes of protecting the Canada. [...] Poor disposal the drug manufacturing processes, the site of practices may also pose a human health risk to re- manufacturing, and the design of the ventilation occupants and to surrounding neighbours. [...] Exposure of building occupants to residual chemicals Levels and patterns of exposure is dependent on several factors including the location of contamination within the structure, whether it is Preliminary data from samples collected in a present (e.g., in air and/or on surfaces), and the residence used for MDA manufacturing suggest that behavioural patterns of re-occupants. [...] In turn, the risk MDA residue may spread throughout the structure, of re-occupants experiencing health effects upon even if the lab is located in the basement of the exposure to residual chemicals depends on many residence (BCCDC, unpublished data). [...] MDA was factors including the inherent toxicity of the residue, detected on a child's training toilet (2,418 μg/sample) the intensity and frequency of exposure, and the located in the master bathroom three stories above duration of exposure to toxic substances.